Another equivalent formulation of GR is based on non-metricity. Here, a flat spacetime can be considered and gravitational field is associated to non-metricity. This formulation is known as the symmetric teleparallel equivalent of GR (STEGR) [1]}, [2]}, [3]}, [4]}, [5]}, [6]}. In STEGR there is a metric tensor, geometry is equipped with a non-metric connection
but total curvature and torsion are vanishing.
